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InvisibleCitizen X
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Registered: 01/19/14
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Low Humidity in Mini Greenhouse, plz help
    #20564707 - 09/14/14 04:41 AM (9 years, 5 months ago)

Hello all,

I've hadn't had a successful Oyster grow yet.

I can spawn to wheat, and pasteurize straw, got filter patch bags, but they keep drying out and dying.
I tried a tub of perlite, w/ open top and they dried out. I now have the mini greenhouse, w/ a tub of perlite and cool mist going 24/7 inside on low setting, still dried out. I didn't mist as much as I should've but the mist I thought would cover that?

In RR video he has a similar setup, humidifier outside and perlite on the inside. Since this is a spare room, I have to run an air conditioner to reduce the temp, and it's just not going well.

6 months and not a single flush - I'm needing some advice big time.


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Invisibleprosopisnigra
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Registered: 12/18/13
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Re: Low Humidity in Mini Greenhouse, plz help [Re: Citizen X]
    #20565663 - 09/14/14 10:55 AM (9 years, 5 months ago)

Four things:

First one: and this seems a little silly, but are you sure the problem is drying? Maybe it´s something else that look similar.

Second: maybe put the humidifier on the top shelf and the mushrooms under it.

Third: maybe the air conditioner makes the room too dry.

Fourth: are you sure that the substrate have enough humidity when you begin the spawning phase?


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InvisibleMr. Alien
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Re: Low Humidity in Mini Greenhouse, plz help [Re: prosopisnigra]
    #20566265 - 09/14/14 01:13 PM (9 years, 5 months ago)

Is that a ultrasonic cool mist?  If so... how are you providing FAE? Oysters need lots of FAE, but i can't see any slits or Active FAE system in your greenhouse.

You would need to make holes in the bottom and in the top of the Fruiting chamber for perlite to work properly, this is how a SHFC works. Well the bottom of the GH is open...but the tray with the perlite is not, you need air traveling trough the perlite or is not gonna work.

"Shotgun Terrarium Theory of Operation
The theory of operation for the shotgun mushroom fruiting chamber is that natural air currents travel from areas of high pressure to areas of low pressure. Cool air has the molecules closer together than warm air, thus cool air is at a slightly higher pressure than warm air. When we put several inches of damp perlite in the bottom of our terrarium, we create an area with a slightly cooler temperature than the air above, which is exposed to lights that create heat, and our mushroom substrates, which are often at up to a few degrees warmer than the surrounding air due to thermogenesis.

This temperature differential, however slight, results in enough of a pressure gradient that it causes air to flow up through the perlite, absorbing moisture as it travels, and into the relatively lower pressure air within the fruiting portion of our fruiting chamber.

This air then exits through the holes in the upper section of the terrarium, carrying the excessive CO2 produced by our mycelium out with it. With this design, no electrical or mechanical equipment is required. Regular misting helps to keep our brf cakes or other substrates moist, and also serves to replace the moisture that evaporates from the perlite. RR"


Edited by Mr. Alien (09/14/14 01:32 PM)


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InvisibleCitizen X
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Re: Low Humidity in Mini Greenhouse, plz help [Re: Mr. Alien]
    #20566495 - 09/14/14 01:47 PM (9 years, 5 months ago)

Thats a lot of info to process, stand by.


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InvisibleCitizen X
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Re: Low Humidity in Mini Greenhouse, plz help [Re: Mr. Alien]
    #20566554 - 09/14/14 01:57 PM (9 years, 5 months ago)

Quote:

Mr. Alien said:
Is that a ultrasonic cool mist?  If so... how are you providing FAE? Oysters need lots of FAE, but i can't see any slits or Active FAE system in your greenhouse.

You would need to make holes in the bottom and in the top of the Fruiting chamber for perlite to work properly, this is how a SHFC works. Well the bottom of the GH is open...but the tray with the perlite is not, you need air traveling trough the perlite or is not gonna work.

"Shotgun Terrarium Theory of Operation
The theory of operation for the shotgun mushroom fruiting chamber is that natural air currents travel from areas of high pressure to areas of low pressure. Cool air has the molecules closer together than warm air, thus cool air is at a slightly higher pressure than warm air. When we put several inches of damp perlite in the bottom of our terrarium, we create an area with a slightly cooler temperature than the air above, which is exposed to lights that create heat, and our mushroom substrates, which are often at up to a few degrees warmer than the surrounding air due to thermogenesis.

This temperature differential, however slight, results in enough of a pressure gradient that it causes air to flow up through the perlite, absorbing moisture as it travels, and into the relatively lower pressure air within the fruiting portion of our fruiting chamber.

This air then exits through the holes in the upper section of the terrarium, carrying the excessive CO2 produced by our mycelium out with it. With this design, no electrical or mechanical equipment is required. Regular misting helps to keep our brf cakes or other substrates moist, and also serves to replace the moisture that evaporates from the perlite. RR"




I don't put holes in the bottom of my perlite tub, it would get everywhere?
When I open my green house for misting that's when I get my FAE in theory
Idk I'm stumped, I feel like when I try and correct one problem, I create another.

My humidifier sucks ass, and I just changed the filter.



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InvisibleCitizen X
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Re: Low Humidity in Mini Greenhouse, plz help [Re: Citizen X]
    #20566629 - 09/14/14 02:12 PM (9 years, 5 months ago)

Here's my last two attempts



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InvisibleMr. Alien
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Re: Low Humidity in Mini Greenhouse, plz help [Re: Citizen X] * 1
    #20566996 - 09/14/14 03:38 PM (9 years, 5 months ago)

You need way more FAE, not just when misting. Not only FAE but evaporation of the substrate surface.  Both FAE and EVAP are super important pinning trigger and for the fruiting body formation. You need to supply constant FAE, you need to implement a passive form of FAE in your GH, or an active one, FAE must be constant. With proper FAE you will have a good evaporation rate.Those mushrooms doesn't look very happy, you are not giving them the proper conditions they need, and you are more worried for humidity rather than FAE, FAE is way more important. Cut some slits in your GH.

Make 1/4 " holes in the bottom of the perlite tub, perlite won't fall everywhere.


Edited by Mr. Alien (09/14/14 03:44 PM)


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Offlineqrkid
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Re: Low Humidity in Mini Greenhouse, plz help [Re: Mr. Alien]
    #20569701 - 09/15/14 06:57 AM (9 years, 5 months ago)

I have pretty much that exact setup and it is in my spare bedroom which is cooled by the central AC. I have no problem keep humidity up in the 90's, so I am not certain why you are not able to.

Like was said above. FAE looks to be a problem from those pics. I have not cut holes in the plastic but I do keep the 2 zippers unzipped to 3/4 the way up the tent. I then have a fan across the room that is half pointed at the GH and comes on every 1hr or so and it circulates air through the unzipped door flap. Obv humidity drops while a fan blows, but I time the cool mist humidifier to be on when the fan is on, keeps humidity in the 80's while FAE happens and then when the fan goes off the humidity goes back up. Also my impellar style humidifier helps with FAE.


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Offlinefish_4_all
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Registered: 11/10/13
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Re: Low Humidity in Mini Greenhouse, plz help [Re: qrkid]
    #20575537 - 09/16/14 02:25 PM (9 years, 5 months ago)

To keep the perlite in place use fiberglass window screen. Should allow for bigger holes and more FAE.


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